大约有 7,710 项符合查询结果（耗时：0.0268秒） [XML]
Why can't decimal numbers be represented exactly in binary?
... see that any rational with a terminating 10-representation will be of the form p/q exactly when q has only 2s and 5s in its prime factorisation; and that same number will have a terminating 2-representatiion exactly when q has only 2s in its prime factorisation.
But one of these cases is a subset ...
What algorithm can be used for packing rectangles of different sizes into the smallest rectangle pos
...ing half of the strip until the next item is too wide.
A new baseline is formed and Step (4) is repeated on the lower baseline until all items are packed.
Time complexity: O(n ·log n).
The approximation ratio of Sleator's algorithm is 2.5 which is tight.
...
Rails update_attributes without save?
...s true (the default), then sensitive attributes can be protected from this form of mass-assignment by using the attr_protected macro. Or you can alternatively specify which attributes can be accessed with the attr_accessible macro. Then all the attributes not included in that won’t be allowed to b...
How do I use $scope.$watch and $scope.$apply in AngularJS?
... digest loop would take ages to evaluate and you would quickly run into performance issues. That is why the AngularJS team gave us two ways of declaring some $scope variable as being watched (read below).
$watch helps to listen for $scope changes
There are two ways of declaring a $scope variable a...
Is there a way to crack the password on an Excel VBA Project?
...ected()
If Hook Then
MsgBox "VBA Project is unprotected!", vbInformation, "*****"
End If
End Sub
Come back to your VBA Projects and enjoy.
share
|
improve this answer
|
...
What is the best way to solve an Objective-C namespace collision?
...e classes from both frameworks at the same time, and you are targeting platforms which support NSBundle unloading (OS X 10.4 or later, no GNUStep support), and performance really isn't an issue for you, I believe that you could load one framework every time you need to use a class from it, and then ...
What are 'get' and 'set' in Swift?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
How can I build a small operating system on an old desktop computer? [closed]
...r. Older PCs have a BIOS in firmware which determines how the hardware performs some initialization (at least video, keyboard, and some form of storage or boot loader). (Update October 2017: Newer PCs have EFI or UEFI firmware ... which is largely a pedantic difference; the serve the same purposes ...
Why shouldn't I use “Hungarian Notation”?
I know what Hungarian refers to - giving information about a variable, parameter, or type as a prefix to its name. Everyone seems to be rabidly against it, even though in some cases it seems to be a good idea. If I feel that useful information is being imparted, why shouldn't I put it right there wh...
Why does Twitter Bootstrap Use Pixels for Font Size?
... blogpost makes no mention of adding support for ems.
[Update] Lots more information about Bootstrap V3 available in the pull request here including the following from Mark Otto:
We explored the use of rem units over pixels, but found little benefit
to offset the implications of their use. IE8 wou...